17. So you bought a new boat for $10,000, you noticed that the value of the boat will decrease
linearly for the next 10 years, until it is worth $0.
Which of the following models describe the value
of the boat as a function of the number of years
you've owned the boat?

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

the answer would be c